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Assertion : Earthworms excrete both ammo...

Assertion : Earthworms excrete both ammonia and urea .
Reason : Excretion in earthworm depends on the environment .

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and the reason are true and the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Earthworms excrete ammonia when sufficient water is available, because a large volume of water is needed by the animal to dissolve ammonia and eliminate it from, the body. Whereas in drier environment the animal eliminates urea as it requires only considerable amount of water for the excretion only because urea is very soluble in water.
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